Pipe-cutting device



. April 5,1927. 1,623,833 I w, A. GEIS PIPE CUTTING DEVICE Filed Aug. 20. 1926 2 Sheets-Sheet 1 IN VEN TOR.

Patented Apr. 5, 1927.

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"PATENT orrrcs.

IWALTER"A. ears, OF-MTDVALE; euro.

rrsn cn'rrritee DEVIGE.

=Applicationfi1ed August 20, 1926. 1' SeriahNo. 130,537.

.My {presentinvention pertains to cutting devices. through. the medium of which hoies madebe producedin .green sewerv pipe or @the. like whereby Tand Y branch pipes or connections may be. readily and easily secured intothe parent pipe. I

'Qther objects of the invention'will be fully which I Figuresl isca side elevationof thefirst form of my device.

Figure2 is a top plan view thereof. Figure 3 is a sectional view taken on the 7 line 33 of Figure 1 in the direction of the arrows.

Figure 4 is a view partly in section and partly in elevation looking from the front of the device.

Figure 5 is a detail view showing a pipe in section with my device arranged therein.

Figure 6 is a detail view of the finished pipe with the T connection.

Figure 7 is a side elevation of the second form of my device for producing wide connections.

Figure 8 is a top plan view thereof.

Figure 9 is a sectional view on line 9-9 of Figure 7 looking in the direction of the arrows.

Figure 10 is a detail View of the rear standard of the second form of construction.

Figures 11 and 12 disclose the mode of production and the finished product as pro-' duced by my novel device.

Reference will first be had to Figures 1 to 6 of the drawings in which views similar numerals designate corresponding parts.

My novel cutting device comprises a shaft 1 that is sharply pointed at 2 for the purpose of piercing a sewer pipe or the like and at 3 I provide a removable handle for turning the shaft 1.

Extending upwardly from the shaft 1 are standards 4 and 5 that are provided with the depending lug 6 that fit into coacting rocesses of the standard 1 and are bolted thereto as indicated by 7. Each of the standards 4 and 5 is provided with kerfs 8 that receive preferablypiano wire 9 which isanchored at one end in the shaft 1 and at the point 10. This wire is further secured at its opposite end to a tension screw 11 that is provided at a point below theshaft- 1 with a tensionnut 12. It will be manifest thatthe standard 4 is )rovided with the sharp knifeedge1 3.

nutheypractical use of thisform of my invention the point'2 of the-shaft. 1-

ployed to pierce the pipe 14 and by continual rotation ofthe handle.3 .tlie wire.9:will cut a. circular hole 15 to accommodate the branch or connection l6. liianifestly the cutting edge 13 of the standard 4 willatrim away the-pipe soas to make piercing of said, pipe less difficult.

Reference will nowbe had to Figures 7 to .12 oftlieadrawings in which similar-.-nu1nerals designate corresponding. parts.

The second form of my invention comprises the shaft 20, point 21, handle 22, standard 23, lugs 25, screws 26, wire 27 anchored at 27 and knife edge 28 all corresponding to similar elements of my first form of construction.

My second form of construction differs from the first in that I provide an upright 24 that has a longitudinal slot 29 and arranged in this slot is a member 30 that engages the free end of the wire 27 and this member 30 is secured in the upright 24 at the position desired by means of the nut 31. The upright 24 at its lower end is provided with a saddle 32 and the slot 33 while passing through the ends of the saddle 32 and adapted to firmly clamp said ends about the shaft is a bolt 34.

This construction of cutter is adapted to provide an angularly arranged hole 36 in the pipe 35 for reception of the connection or outlet 27.

In the practical operation of this device, the point of the shaft is inserted in the outer wall of the pipe 35 at an approximate angle of degrees and the cutting blade 28 will pierce the pipe during the forward movement of the shaft. The opening or hole 36' is then finished by rotation of the shaft and the wiring will cut the hole at the angle desired. Slack of the wire 27 may be taken up by moving the member with respect to the slot 29 of the standard 24.

It will be manifest that the production of the desired. holes in a pipeis an extremely simple operation and one that may be accomplished without the employment of skilled labor and that because of its simplicity the cost of production and up-keep of the device is reduced. to a minimum as there are no elements provided therein that are liable to become inoperative after a short time of use.

What I claim is:

1. The combination of a shaft pointed at one end and having a handle at the opposite end, standards mounted on the shaft and secured thereto, acutting edge formed in one of the standards and a wire anchored in the shaft and adapted to rest in the standards and means for taking up the slack of the wire between the standards.

2. The combination of a shaft pointed at one end thereof, recesses formed in the shaft, standards bolted in the shaft and having kerfs in the upper ends thereof, a cutting edge formed in one of the standards, a wire anchored in the shaft and adapted to rest in the lcerfs of the standards, a tension bolt adapted to engage one end of the wire and pass through the shaft for placing the wire under tension.

3. The combination of a shaft pointed at one end'and having a removable handle at the opposite end, a slot formed in the shaft,

a standard having one face thereof provided with a knife edge, a lug secured to the lower end of the standard, means for bolting the lug in the recess of the shaft, a kerf formed in the upper end of the standard, a second standard having a slot therein and provided on its lower end with a saddle adapted to surround the shaft, means for clamping the saddle to the shaft, a member adapted to rest in the slot, means for fixedly securing the member in the slot, and a wire anchored at one end to the shaft and to pass through the kerf of the first standard and to be engaged by the member that travels in the slot of the second standard.

4. The combination of a shaft having a piercing element produced on one end thereof, standards mounted in the shaft, a wire arranged in the shaft and extending from one to the other of the standard and means for increasing or decreasing: tension of the wire between the standards.

In testimony whereof I have hereunto set my hand.

\VALTER A; GEIS. 

